North America Native Plant

Heller’s Beardtongue

Botanical name: Penstemon triflorus integrifolius

USDA symbol: PETRI

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Penstemon helleri Small (PEHE10)  âš˜  Penstemon triflorus A. Heller var. integrifolius (Pennell) Cory (PETRI2)   

Heller’s Beardtongue: A Rare Texas Native Worth Protecting Meet Heller’s beardtongue (Penstemon triflorus integrifolius), a charming native perennial that calls Texas home. While this little-known wildflower might not be on every gardener’s radar, it deserves a spot in the conversation about preserving our native plant heritage. What Makes Heller’s Beardtongue ...

Rare plant alert!

Region: Conservation status by state

Status: S3T3: Status is uncertain but is somewhere between the following rankings: Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘ Subspecies or variety is vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals. ⚘

Heller’s Beardtongue: A Rare Texas Native Worth Protecting

Meet Heller’s beardtongue (Penstemon triflorus integrifolius), a charming native perennial that calls Texas home. While this little-known wildflower might not be on every gardener’s radar, it deserves a spot in the conversation about preserving our native plant heritage.

What Makes Heller’s Beardtongue Special?

Heller’s beardtongue is a native forb – that’s botanist speak for a soft-stemmed perennial herb without woody tissue. As a member of the Penstemon family, it likely shares the characteristic tubular flowers that make beardtongues so beloved by pollinators, though this particular variety remains somewhat mysterious in the gardening world.

You might also see this plant listed under its synonyms: Penstemon helleri Small or Penstemon triflorus A. Heller var. integrifolius (Pennell) Cory. Don’t let the scientific name shuffle fool you – it’s all the same special Texas native.

Where Does It Grow?

This beardtongue is exclusively a Texan, growing naturally only within the Lone Star State. Its limited geographic range makes it particularly special for Texas gardeners looking to create authentic native landscapes.

A Plant Worth Protecting

Here’s where things get interesting – and important. Heller’s beardtongue has a conservation status of S3T3, which indicates it may be uncommon or vulnerable. While the exact details of its conservation needs aren’t well-defined, this status suggests we should treat this native with extra care.

If you’re considering adding Heller’s beardtongue to your garden, make sure you source it responsibly. This means:

  • Purchasing from reputable native plant nurseries
  • Ensuring the plants are nursery-propagated, not wild-collected
  • Checking that the source follows ethical harvesting practices
  • Never collecting seeds or plants from wild populations

The Mystery Factor

We’ll be honest with you – Heller’s beardtongue is something of an enigma in the native plant world. Detailed information about its specific growing requirements, appearance, and garden performance is surprisingly scarce. This could be because it’s uncommonly grown, has a very specific habitat, or simply hasn’t received much attention from researchers and gardeners.

What we do know is that as a perennial forb, it should return year after year once established, making it potentially valuable for sustainable landscaping in appropriate Texas locations.

Should You Grow It?

If you’re a Texas gardener passionate about native plants and conservation, Heller’s beardtongue could be a meaningful addition to your landscape – provided you can find it from responsible sources. Growing rare natives like this one helps preserve genetic diversity and supports conservation efforts.

However, given the limited availability and conservation concerns, you might also consider other well-documented Texas Penstemon species that can provide similar ecological benefits while being easier to source and grow.

The Bottom Line

Heller’s beardtongue represents the fascinating – and sometimes frustrating – world of native plant conservation. While we may not have all the answers about this particular variety, its status as a Texas endemic makes it worth protecting and potentially cultivating by dedicated native plant enthusiasts.

If you do decide to grow this rare beauty, consider yourself a conservation gardener, helping to preserve a piece of Texas’s natural heritage right in your backyard.

Heller’s Beardtongue

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Scrophulariales

Family

Scrophulariaceae Juss. - Figwort family

Genus

Penstemon Schmidel - beardtongue

Species

Penstemon triflorus A. Heller - Heller's beardtongue

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA